Improvement in saw-gummers



31H. 0; RONG.

SELW-G iImIIIGI.

No. 207,456. 7 I Patented Aug. 27,1878.

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mu I i w A 1| E mm m WITNESSES: INVE TOR:

ATTORNEYS.

N. PETERS. PHOTGUTMOGRAPHER. WlsmNamN- D- UNITED STATES.

PATENT QFFICE.

HENRY O. STRONG, OF MAUSTON, WISCONSIN, ASSIGNOR TO'HIMSELF AND OSCAR F.TEMPLE, OF SAME PLACE IMPROVEMENT IN SAW-GUMMERS.

Specification forming partof Letters Patent No. 207,456, dated August27, 1878; application filed May 4,1878.

To all whom it may concern Be it known that I, HENRY O. STRONG, ofMauston, in the county of Juneau and State of Wisconsin, have invented anew and Improved Saw-Gummer, Shears, &c., of which the following is aspecification:

The object of my invention is to provide a time and labor saving machinefor cutting, gumming, and shearing saw-teeth, and which may be used alsoas a punch.

The invention consists in the construction and combination of thevarious parts, as will be hereinafter described and claimed.

In the accompanying drawing, Figure 1 represents a side view of myimproved saw-guminer, partly in section. Fig. 2 is a top view of thebed-plate and dieholder. Fig. 3 is a perspective view of thegumming-punch. Fig. 4 is a perspective view of the gage. Fig. 5 is aside view, and Fig. 6 an edge view, of the shearing-dies.

Similar letters of reference indicate corresponding parts.

A is the bed-plate of the machine. This is provided with two stoutupright lugs, to, between which is pivoted the downward-projectin g lugb of the punch-lever B by the strong pin 1), which latter serves asfulcrum for the lever B. On the rear end of the bed-plate A are twolugs, a, grooved correspondingly on their upper surface, to receive andsupport the pivots or journals 0 of the operating or hand lever 0, whosecam-shaped short end 0 is arranged in contact with the under side of therear end of the punch-lever B, so as to raise the latter and depress itsforward end by depressing the handle of the lever O, the throw beinglimited by the projection c on the cam c,which strikes against the stopb at the rear end of the lever B, and prevents the lever C from beingthrown down so far as to bring the cam 0 out of contact with the leverB.

The punch is raised, and the rear end of the lever B depressed upon thecam c, by the spring D, attached at one end to the stationary pin or lugd in the bed-plate, and acting with the other end against the pin orprojection d, cast upon the under side of the lug Z) of the lever B.

E is the male die or gumming-punch, fastened by a set-screw, e, in avertical socket in the forward end of the punch-lever B, in position toenter the female die F, (and cut out a space at the bottom of theopening between two teeth of a saw-blade,) by depressing the handleverO, the cutting-line being level with the fulcrum of the lever B to avoidany drag of the dies. G is the die-holder, provided with a centralsocket for the reception of the die F, which is adjusted and held inposition in the said socket by horizontal set-screws I, fitted throughthe vertical flange which surrounds the socket.

The die-holder Gis secured to the bed-plate A by two bolts, H, throughslots 9 g in lugs on opposite sides of the die-socket, the lug at theslot 9 being cut oif at the end of the slot, so that the plate G may beswung out horizontally on the bolt in the slot 9 from the bolt in theslot 9, after loosening the nuts on the bolts H, for changing the diefrom a gummer to a shear, or otherwise, as required.

The depth, width, taper, and uniform shape of the teeth to be out areregulated by the adjustable gage J against the vertical flange j, bywhich the edge of the saw-blade is held and guided while operated uponby the dies. The gage J has an open slot, j, at one end, and is securedin any desired position by a thumb-screw, 70, going through the slot j,and screwing into a threaded vertical hole in one endof the gage-holderL, which latter is fastened to the outside of one of the lugs a of thebed-plate A by a thumb screw, M, going through a longitudinal slot, 1,in the gageholder L.

By the slot 1 and thumb-screw Mthe holder L can be set to adjust thegage J to the desired depth of the teeth of the saw, and by the slot jand the thumb-screw 7c the gage J can be swung horizontally, adjusted,and set to the desired width and inclination or taper of the tooth.

For gaging the distance between the teeth in cutting a new saw-blade, alittle wire, K, is fastened in an upright flange or lug upon the plateJ, inside the flange j, and projecting with its bent point through thecentral opening in the flange j (shown in Fig. 4) just far enough toenter a tooth just out, and, by its adjusted distance from the punch E,gage the spacefor the next cut, the depth of the teeth being gaged bythe flange j, as usual.

In gumming 01d saw-teeth, the wire K, as not needed, is removed.

\Vhen it is desired to cut away the whole or a portion of the tooth onteeth of an'old saw, the shear-dies E F,Figs. 5 and 6, are inserted inplace of the gumming-dies E F, and secured by the set-screws e I in aposition parallel with or at right angles to the length of the machine,according to whether a slit in or a cross-cut of the teeth may berequired to be made.

This machine can be used to punch holes, and for other similar purposes,by changing the dies accordingly, and can be arranged to be worked byfoot or by other power.

HENRY O. STRONG.

Witnesses:

J OHN TURNER, WILLIAM TOWERS.

